package com.canic.dkd.base.utils;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;

/**
 * spring bean 工具类
 * @author ZC
 */
@Slf4j
@Component
public class SpringContextUtil {

    private static ApplicationContext applicationContext;

    /**
     * 获取上下文 
     * @return
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 设置上下文 
     * @param applicationContext
     * @throws BeansException
     */
    public static  void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        log.info(" >>> SpringContextUtil have completed >>> ");
        SpringContextUtil.applicationContext = applicationContext;
    }

    /**
     * 通过name获取 Bean.
     * @param name
     * @return
     */
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }

    /**
     * 通过class获取Bean.
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz){
        return getApplicationContext().getBean(clazz);
    }

    /**
     * 通过name,以及Clazz返回指定的Bean
     * @param name
     * @param clazz
     * @param <T>
     * @return
     */
    public static <T> T getBean(String name,Class<T> clazz){
        return getApplicationContext().getBean(name, clazz);
    }

}
